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* [PATCH 1/9] drm/amdgpu: make sure BOs are locked in amdgpu_vm_get_memory
@ 2023-07-07 15:07 Alex Deucher
  2023-07-07 15:07 ` [PATCH 2/9] drm/amdgpu: make sure that BOs have a backing store Alex Deucher
                   ` (9 more replies)
  0 siblings, 10 replies; 14+ messages in thread
From: Alex Deucher @ 2023-07-07 15:07 UTC (permalink / raw)
  To: stable
  Cc: mario.limonciello, Christian König, Alex Deucher,
	Guchun Chen, Mikhail Gavrilov

From: Christian König <christian.koenig@amd.com>

We need to grab the lock of the BO or otherwise can run into a crash
when we try to inspect the current location.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e2ad8e2df432498b1cee2af04df605723f4d75e6)
Cc: stable@vger.kernel.org # 6.3.x
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 69 +++++++++++++++-----------
 1 file changed, 39 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 5b3a70becbdf..a252a206f37b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -920,42 +920,51 @@ int amdgpu_vm_update_range(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 	return r;
 }
 
+static void amdgpu_vm_bo_get_memory(struct amdgpu_bo_va *bo_va,
+				    struct amdgpu_mem_stats *stats)
+{
+	struct amdgpu_vm *vm = bo_va->base.vm;
+	struct amdgpu_bo *bo = bo_va->base.bo;
+
+	if (!bo)
+		return;
+
+	/*
+	 * For now ignore BOs which are currently locked and potentially
+	 * changing their location.
+	 */
+	if (bo->tbo.base.resv != vm->root.bo->tbo.base.resv &&
+	    !dma_resv_trylock(bo->tbo.base.resv))
+		return;
+
+	amdgpu_bo_get_memory(bo, stats);
+	if (bo->tbo.base.resv != vm->root.bo->tbo.base.resv)
+	    dma_resv_unlock(bo->tbo.base.resv);
+}
+
 void amdgpu_vm_get_memory(struct amdgpu_vm *vm,
 			  struct amdgpu_mem_stats *stats)
 {
 	struct amdgpu_bo_va *bo_va, *tmp;
 
 	spin_lock(&vm->status_lock);
-	list_for_each_entry_safe(bo_va, tmp, &vm->idle, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
-	list_for_each_entry_safe(bo_va, tmp, &vm->evicted, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
-	list_for_each_entry_safe(bo_va, tmp, &vm->relocated, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
-	list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
-	list_for_each_entry_safe(bo_va, tmp, &vm->invalidated, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
-	list_for_each_entry_safe(bo_va, tmp, &vm->done, base.vm_status) {
-		if (!bo_va->base.bo)
-			continue;
-		amdgpu_bo_get_memory(bo_va->base.bo, stats);
-	}
+	list_for_each_entry_safe(bo_va, tmp, &vm->idle, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
+
+	list_for_each_entry_safe(bo_va, tmp, &vm->evicted, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
+
+	list_for_each_entry_safe(bo_va, tmp, &vm->relocated, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
+
+	list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
+
+	list_for_each_entry_safe(bo_va, tmp, &vm->invalidated, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
+
+	list_for_each_entry_safe(bo_va, tmp, &vm->done, base.vm_status)
+		amdgpu_vm_bo_get_memory(bo_va, stats);
 	spin_unlock(&vm->status_lock);
 }
 
-- 
2.41.0


^ permalink raw reply related	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2023-07-16 19:28 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-07-07 15:07 [PATCH 1/9] drm/amdgpu: make sure BOs are locked in amdgpu_vm_get_memory Alex Deucher
2023-07-07 15:07 ` [PATCH 2/9] drm/amdgpu: make sure that BOs have a backing store Alex Deucher
2023-07-07 15:07 ` [PATCH 3/9] drm/amdgpu: Skip mark offset for high priority rings Alex Deucher
2023-07-07 15:07 ` [PATCH 4/9] drm/amd/pm: revise the ASPM settings for thunderbolt attached scenario Alex Deucher
2023-07-07 15:07 ` [PATCH 5/9] drm/amdgpu/sdma4: set align mask to 255 Alex Deucher
2023-07-07 15:07 ` [PATCH 6/9] drm/amd/pm: add abnormal fan detection for smu 13.0.0 Alex Deucher
2023-07-07 15:07 ` [PATCH 7/9] drm/amdgpu: check RAS irq existence for VCN/JPEG Alex Deucher
2023-07-07 15:07 ` [PATCH 8/9] drm/amdgpu: fix number of fence calculations Alex Deucher
2023-07-07 15:07 ` [PATCH 9/9] drm/amd: Don't try to enable secure display TA multiple times Alex Deucher
2023-07-11 21:40 ` [PATCH 1/9] drm/amdgpu: make sure BOs are locked in amdgpu_vm_get_memory Mario Limonciello
2023-07-12  5:12   ` Greg Kroah-Hartman
2023-07-16 19:16 ` Greg KH
2023-07-16 19:22   ` Mario Limonciello
2023-07-16 19:28     ` Greg KH

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